Oregon Tilth is an American nonprofit membership organization dedicated to supporting and advocating organic food and farming, based in Corvallis, Oregon. Oregon Tilth's purpose is to educate gardeners, farmers, legislators, and the general public about the need to develop and use sustainable growing practices that promote soil health, conserve natural resources, and prevent environmental degradation while producing a clean and healthful food supply for humanity. Oregon Tilth Certified Organic (O...
